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How to Deglaze Brake Drums A Step-by-Step Guide Brake drums are a crucial component of a vehicle's braking system, particularly in older models that employ drum brakes instead of the more common disc brakes. Over time, brake drums can develop a glaze due to heat buildup, wear, and friction, leading to reduced braking efficiency. Deglazing is an essential maintenance task that restores proper functionality and enhances safety. In this article, we’ll discuss how to effectively deglaze brake drums. Understanding Glazing Glazing occurs when the surface of the brake drum becomes smooth and shiny, which results from excessive heat and friction. This can happen particularly if the brakes are constantly applied with too much force, or if they are not adjusted properly. A glazed drum can reduce the friction needed for effective braking, leading to longer stopping distances and potential brake failure. Tools and Materials Needed Before starting the deglazing process, gather the following tools and materials - Safety goggles and gloves - A jack and jack stands - A lug wrench - Brake cleaner - Sandpaper (preferably 80-120 grit) - A brake drum inspection tool or a set of calipers - A wire brush or a brake cleaning tool - A torque wrench (for reassembly) Step-by-Step Guide to Deglaze Brake Drums 1. Safety First Before you begin, ensure that your vehicle is parked on a flat, stable surface. Put on safety goggles and gloves to protect yourself from dust and debris. 2. Loosen the Lug Nuts Using a lug wrench, slightly loosen the lug nuts on the wheels where you will be working. Do not completely remove them yet; just break their tightness. 3. Lift the Vehicle Use a jack to lift the vehicle and secure it with jack stands . Ensure it's stable before moving on. how to deglaze brake drums 4. Remove the Wheel Now that the vehicle is secure, remove the lug nuts completely and take off the wheel to expose the brake drum. 5. Inspect the Brake Drum Before deglazing, examine the brake drum for any obvious damage such as cracks or deep grooves. Use a brake drum inspection tool or calipers to measure the thickness. If the drum is too thin, it may need to be replaced. 6. Clean the Brake Drum Use brake cleaner to thoroughly clean the inside and outside surfaces of the brake drum. This will remove dust, grease, and other contaminants that could interfere with the deglazing process. 7. Deglazing the Drum Take the sandpaper and gently rub the surface of the brake drum in a circular motion. Focus on areas that appear particularly glazed, but avoid removing too much material. The goal is to create a rougher surface that can regain friction. 8. Finish Up the Drum After sanding, clean the drum again with brake cleaner to remove any dust created by sanding. 9. Reassemble the Brake Components Carefully reattach any components you may have removed (like the brake shoes if they were taken off for access) and put the wheel back on. Hand-tighten the lug nuts at first. 10. Lower the Vehicle Once everything is reassembled, lower the vehicle back to the ground using the jack and remove the jack stands. 11. Tighten the Lug Nuts Use a torque wrench to tighten the lug nuts to the manufacturer’s specifications in a crisscross pattern to ensure even pressure. 12. Test Drive After performing the maintenance, take the car for a short drive to ensure that the brakes are functioning properly. Listen for any unusual sounds or signs of trouble. Conclusion Deglazing brake drums is a vital maintenance task that can significantly improve the safety and performance of your braking system. By following the steps outlined above, you can effectively restore the braking efficiency of your vehicle, ensuring that you and your passengers remain safe on the road. Regular inspections and maintenance of brake components, including deglazing when necessary, are vital for vehicle longevity and safety.

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